Laura and Diane bang on Boen's door when they need...

Câu hỏi: Laura and Diane bang on Boen's door when they need heavy furniture moved, after they have clogged the garbage disposal, and __________.

A having discovered a spider in the bathtub

B upon the discovery of a spider in the bathtub

C if they find a spider in the bathtub

Câu hỏi trên thuộc đề trắc nghiệm

- Câu trúc song hành - Có lời giải chi tiết